The effect of heel elevation on rectus femoris and thoracolumbar extensor EMG activity during deep squatting-standing movement.

IF 1.4 4区医学 Q3 ORTHOPEDICS

Journal of Back and Musculoskeletal Rehabilitation Pub Date : 2026-03-01 Epub Date: 2025-10-27 DOI:10.1177/10538127251387829

Mariam A Ameer, Ammar M Al Abbad, Saja N Alrashedi, Abeer M Alruwaili, Meyool M Alruwaili, Asma H Alsrhany, Soha K Alruwaili, Shmookh M Alserhani, Najd F Alshammari, Abeer F Hanafy

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引用次数: 0

Abstract

BackgroundDeep squatting-standing movement is a multi-joint movement used to develop neuromuscular control and strength in different rehabilitation settings. The elevated heel during deep squatting-standing movement showed little literature on studying its effect on the back and lower extremity muscles.ObjectivesThe current study investigated the impact of the elevated heel during deep squatting-standing movement on the electromyography activities of the selected rectus femoris and thoracolumbar extensor muscles.Materials and MethodsA quasi-experimental study with one group was conducted on two separate occasions (feet flat on the ground and with heel elevation using a 7 cm wedge) with twenty young active Saudi female university students (Age = 20.72 ± 1.34 years, BMI = 21.48 ± 2.29 kg/cm²). The electromyography (EMG) activity of the rectus femoris and thoracolumbar muscles was measured using the Delsys Trigno^TM wireless EMG System (Delsys Inc., USA) during deep squatting to standing movements.ResultsDuring deep squatting with heel elevation, rectus femoris showed a statistically significant increase in EMG activity compared to foot flat in the ground (p-value < 0.05). Conversely, thoracolumbar extensors showed a statistically significant decrease in EMG activity compared to the foot flat in the ground without statistically significant changes in EMG activity between right and left thoracolumbar extensors (p-value > 0.05).ConclusionThese findings suggest that elevated heel during deep squatting-standing movement enhances the rectus femoris muscle activity and lower back safety.

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深蹲-站立运动中足跟抬高对股直肌和胸腰伸肌肌电活动的影响。

深蹲-站立运动是一种多关节运动，用于在不同的康复环境中发展神经肌肉控制和力量。深蹲站立运动中脚跟抬高对背部和下肢肌肉影响的研究文献很少。目的研究深蹲-站立运动中脚跟抬高对股直肌和胸腰伸肌肌电活动的影响。材料与方法选取年龄为20.72±1.34岁，体重指数为21.48±2.29 kg/cm2的年轻沙特女大学生20名，分别在两种不同的情况下（足部平放在地面和足跟用7 cm楔形垫抬高）进行准实验研究。使用Delsys TrignoTM无线肌电系统（Delsys Inc.， USA）测量深蹲至站立运动期间股直肌和胸腰肌的肌电活动。结果深蹲抬高足跟时，股直肌肌电活动比平足时明显增加（p值0.05）。结论深蹲站立运动中增高跟可增强股直肌活动，提高下背部的安全性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Back and Musculoskeletal Rehabilitation 医学-康复医学

CiteScore

2.70

自引率

0.00%

发文量

194

审稿时长

6 months

期刊介绍： The Journal of Back and Musculoskeletal Rehabilitation is a journal whose main focus is to present relevant information about the interdisciplinary approach to musculoskeletal rehabilitation for clinicians who treat patients with back and musculoskeletal pain complaints. It will provide readers with both 1) a general fund of knowledge on the assessment and management of specific problems and 2) new information considered to be state-of-the-art in the field. The intended audience is multidisciplinary as well as multi-specialty. In each issue clinicians can find information which they can use in their patient setting the very next day.